OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application) @* H# D, E: P3 A" P5 @& J0 ]
/*) B; `8 ^' t, N1 B9 x' F. }. Y
* edma_test.c
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*
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* brief EDMA3 Test Application0 v- k- I& w) r' E, l+ ~( \
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* This file contains EDMA3 Test code.1 D* p( h1 M; H
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT( V5 V2 ?; s9 h3 ]: }9 l4 I
* TO CHANGE.) @" H. n- y E5 b n# G* P
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or- X1 U, n/ D+ N; p$ ^' J- n
* modify it under the terms of the GNU General Public License as8 `( ]0 @* G" b$ T
* published by the Free Software Foundation version 2. L6 \5 U6 y+ J2 ?$ Y
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>8 r5 n/ w, l i& H0 U, ~/ X1 S
#include <linux/init.h>
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#include <linux/errno.h>( \2 E* V( ]4 d& n q& m: ^
#include <linux/types.h>
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#include <linux/interrupt.h>2 N7 P! Q+ }, P5 n& ]
#include <asm/io.h>
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#include <linux/moduleparam.h>) F) ^* B2 s2 Z- _
#include <linux/sysctl.h>
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#include <linux/mm.h>( O6 G. B% x& {& t* [
#include <linux/dma-mapping.h>' M3 O; z: m) l9 ?2 _
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#include <mach/memory.h>
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#include <mach/hardware.h>6 [* x. Q3 W# I0 p2 W' _$ p/ y: h
#include <mach/irqs.h>& z8 N7 u, Q: ?( O$ e8 ~
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/$ I* T2 T; D# c0 W
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)2 H* L; a* S S; v5 C
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else, Q# ? K; w& g
#define DMA_PRINTK( x... )7 ?( i5 ?5 w% h K$ e/ f
#define DMA_FN_IN$ b b" D& c: }% g6 r# q. K
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)- p7 G* w1 y+ t: C( P7 j
#define STATIC_SHIFT 3( h( Q3 u! J0 i2 Z) Q/ y
#define TCINTEN_SHIFT 20: X8 L" F7 _- w7 x/ y3 ~
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 230 F# l% g6 I R
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 j$ I; F- W- `& ]0 F: }
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# }7 k4 c- _9 Y1 b, p8 e
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;6 D9 f' i! Z& o2 r" p
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;/ P9 {& V) r# L* A V
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);5 i( o5 ^7 x N& Z/ r9 A6 k
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动